chore: fix compiler warnings

[bestmike007]

Description

Fix compiler warnings.

Checklist

• Test coverage for new or modified code paths
• Changelog is updated
• Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• New clarity functions have corresponding PR in clarity-benchmarking repo
• New integration test(s) added to bitcoin-tests.yml

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (29e31cd) 0.04% compared to head (3030820) 29.25%.
Report is 3 commits behind head on develop.

❗ Current head 3030820 differs from pull request most recent head b0f637f. Consider uploading reports for the commit b0f637f to get more accurate results

Additional details and impacted files

@@             Coverage Diff              @@
##           develop    #3852       +/-   ##
============================================
+ Coverage     0.04%   29.25%   +29.20%     
============================================
  Files          401      315       -86     
  Lines       286816   282789     -4027     
============================================
+ Hits           136    82720    +82584     
+ Misses      286680   200069    -86611     

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[CLAassistant]

All committers have signed the CLA.

[obycode]

Thanks!

[obycode]

@bestmike007 something recently changed with the CLA check. Can you agree to that again?

[obycode]

@bestmike007 something recently changed with the CLA check. Can you agree to that again?

Oh, never mind. Looks like it's me that needs to sign.